The HL-LHC upgrade will require use of new computing resources such as HPCs in their production workflows. Many of the planned HPCs will include significant computing power in the form of accelerators, in particular of Graphic Processing Units (GPUs). To take advantage of these new computing resources ATLAS software and workflows must be adapted to use GPUs. One part of the ATLAS workflow that...
SpinQuest is a transversely polarized Drell-Yan experiment at Fermilab that will measure the Sivers asymmetry for the light antiquarks in the nucleon, using polarized NH3 and ND3 targets and the SeaQuest (E906) spectrometer. Measuring a non-zero Sivers asymmetry would provide strong evidence for non-zero sea-quark orbital angular momentum. Due to the time-dependence of the spectrometer...
SpinQuest at Fermilab is a fixed-target Drell-Yan experiment that will measure the light sea quark (u¯ and d¯) Sivers functions. The experiment will use an unpolarized 120 GeV proton beam from the Fermilab Main Injector and a transversely polarized NH3 or ND3 target; the muons from the Drell-Yan process will be observed in the SeaQuest (E906) spectrometer. This Drell-Yan measurement of the...
The SpinQuest experiment at Fermilab aims to measure the Sivers asymmetry for the u¯ and d¯ sea quarks in the range of 0.1 <xB< 0.5 using the Drell-Yan production of dimuon pairs. A nonzero Sivers asymmetry would provide an evidence for nonzero orbital angular momentum of the sea quarks. The proposed beam intensity is 1.5~×~1012 of 120 GeV unpolarized proton/sec. The experiment utilizes a...